Roadway Traffic Control Inspection Flashcards
7 cards from real CTQP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Roadway Traffic Control Inspection flashcards as text
When a flagging operation is required at night, what additional safety measure must flaggers use beyond standard daytime requirements?
Answer: Wear Class 3 high-visibility garments and use illuminated wands or flashlights
Nighttime flagging requires Class 3 high-visibility garments and illuminated signaling devices so motorists can clearly see flaggers in low-light conditions.
According to MUTCD standards, what is the minimum height for temporary traffic control signs mounted on portable sign supports?
Answer: At least 1 foot clearance from pavement surface, typically 7 feet for pedestrian areas
MUTCD requires at least 1 foot clearance from pavement for roadside signs, but 7 feet clearance where pedestrians may pass beneath the sign.
A temporary lane closure requires which of the following taper configurations at the upstream end?
Answer: A merging taper using channelizing devices to guide traffic out of the closed lane
A merging taper at the upstream end uses channelizing devices in a diagonal pattern to guide vehicles from the closed lane into the open lane.
Which condition would require an inspector to immediately stop work and notify the engineer regarding a TTC plan?
Answer: Workers are operating within the buffer space without authorization or the TTC plan is not on-site
Workers inside the buffer space without authorization or the absence of the TTC plan on-site are critical safety violations requiring immediate work stoppage.
When inspecting temporary pavement markings, what characteristic must yellow centerline markings on a two-lane two-way road have?
Answer: They must be yellow, retroreflective, and placed to match the geometric alignment of permanent markings
Temporary centerline markings on two-lane two-way roads must be yellow and retroreflective, following the same alignment rules as permanent markings.
What is the primary purpose of the downstream taper in a temporary traffic control zone?
Answer: To allow traffic to return to its normal path after passing the work area
The downstream taper guides traffic back to the normal travel path after it has passed the activity area of the work zone.
During a TTC inspection, the inspector notices a Type III barricade being used as a channelizing device in the taper. Is this acceptable?
Answer: No, Type III barricades are only appropriate for road closures, not lane-shift tapers where cones or drums are required
Type III barricades are designated for road closures; lane-shift or merging tapers require channelizing devices such as cones, tubular markers, or drums.